en16931-cli 0.8.0

The EN 16931 e-invoice validator as a command: validate UBL, CII and ZUGFeRD / Factur-X PDFs against EN 16931, XRechnung and Peppol BIS Billing 3.0, convert between UBL and CII, extract and embed ZUGFeRD payloads, and compare two documents as invoices. Reports as text, JSON or SVRL.